HackStack vs Six Hollows
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
HackStack
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Build your hacking empire from nothing. HackStack is an idle clicker set in a cybersecurity underworld. You tap to run exploits, deploy tools that earn while you sleep, research new tech, and build out your rig. It's a cyberpunk parody of the infosec world with real hacking history baked into every corner. EXECUTE exploits to earn CREDS, your in-game currency. Start with a humble Port Scanner. End up running Neural Exploits and a Digital Consciousness. Every tool you deploy keeps earning even when you close the app. RESEARCH 24 tools across 6 categories. Each one comes with an intel card covering real cybersecurity history and lore. 177 cards to find. BUILD YOUR RIG. Upgrade your CPU, RAM, GPU, Storage, Cooling, and PSU. Better hardware means faster research and access to higher-tier tools. EARN CERTIFICATIONS across three branches: Offensive, Defensive, and Management. 23 certs, 69 tiers. They shape how you play and what you can unlock. SURVIVE BREACHES. Phishing attacks, ransomware, DDoS, insider threats. They show up unannounced, they mess with your income, and you need to deal with them fast. COMPLETE DAILY OPS for XP. Quick wins, standard missions, and challenge-tier operations. Something different every day. PRESTIGE when you're ready. Wipe your progress, earn Shadow Creds, buy permanent upgrades, and come back stronger. Free to play. No pay-to-win. Made by one developer who thought Cookie Clicker needed more firmware implants.
Six Hollows
Draft and strategize in this pixel roguelike autobattler. Pick items for your tree each round, and watch the fights unfold. Compete asynchronously against ghost builds of other players in ranked matches.
- Draft-and-watch autobattler gameplay
- Asynchronous PvP against ghost builds
- Strategic item drafting and upgrading
- Seasonal ranked play
- Offline play for ongoing runs
- Variety of item synergies and effects
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Six trees walk into the forest. One walks out. Make sure it is yours. Free to play. No ads. Six Hollows is a draft-and-watch autobattler: each round you pick one item, slot it into your tree, and the fight plays itself. No tapping, no timers, no filler. Your job is the plan. The joy is watching it work. A ROOM FULL OF GHOSTS This is async PvP at your pace. Every run seats you in a room of six; your five rivals are ghosts, builds recorded from other runs near your rank, replayed against you round by round exactly as they were drafted. No live matchmaking, no one rushing your turn, no penalty when life interrupts mid-run. Outbuild them, outlast them, and when a rival falls, their echo lingers for someone to duel. Then leave your own mark: every run you play leaves a ghost behind for other players to face. Make it something worth fearing. EIGHT WAYS TO RUIN A TREE Cinder burns. Blight poisons. Deadeye crits. Rend bleeds. Salvo fires again. Clockwork accelerates. Frostbite stops slots cold. Zap jumps the line. An arsenal across four rarities, every piece growing through three levels. Stack one family until it sings, or splice several into something the room has no answer for. EVERY RUN ITS OWN STORY Open with a Spirit that bends the whole run. Crown an item at max level and pick a boon that bends it further. If a fight drags, sudden death steps in and finishes it. Runs stay short, sharp, and one decision away from legendary. CLIMB THE FOREST Ranked from your first fight: six ranks, Sapling to Elder, and a fresh season on the first of every month. Plant your tree. The room is waiting. Six Hollows needs an internet connection to start a run; a run already in progress finishes fine offline.
Screenshots
Verdict
The clearest difference is in-app purchases: Six Hollows at none against HackStack's 4. Six Hollows also leads on ads (none vs shown) and update cadence (every 3 days vs weekly). On price, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. HackStack sells 4 one-off in-app purchases. Six Hollows asks for nothing beyond the download.
HackStack ships an update weekly, Six Hollows every 3 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.
| Parameter | HackStack | Six Hollows |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (5 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 5 — better |
| Update frequency | Weekly | Every 3 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.6 — better | 18.5 |
| Further details — not scored | ||
| Size | 68 MB | 31 MB |
| Age rating | 4+ | 9+ |
| Developer | Jacob Woodfield | CODE IN MOTION SRL |
In-app purchases
HackStack
- Remove Banner Ads$2.99
- Remove Offline Ads$2.99
- Remove Ops Ads$2.99
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- Remove All Ads$6.99
Six Hollows
No in-app purchases









